rightkit-agent-engine-protocol 0.1.0

Agent engine protocol: events, envelopes, tool calls, trust wrapping and settlement types shared by agent hosts
Documentation 
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use std::time::{SystemTime, UNIX_EPOCH};

pub fn now_iso() -> String {
    let secs = SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .map(|d| d.as_secs())
        .unwrap_or(0);
    epoch_seconds_to_iso(secs)
}

/// RFC 3339 UTC text (`YYYY-MM-DDTHH:MM:SSZ`) for `secs` since the Unix epoch.
fn epoch_seconds_to_iso(secs: u64) -> String {
    i64::try_from(secs)
        .ok()
        .and_then(|secs| rightkit_time::DateTime::from_unix(secs, 0))
        .map(|dt| dt.format_rfc3339())
        .unwrap_or_default()
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn epoch_seconds_format_as_utc_iso() {
        assert_eq!(epoch_seconds_to_iso(0), "1970-01-01T00:00:00Z");
        assert_eq!(epoch_seconds_to_iso(1_704_067_199), "2023-12-31T23:59:59Z");
        assert_eq!(epoch_seconds_to_iso(1_704_067_200), "2024-01-01T00:00:00Z");
    }
}